Eighth-seeded Fernando Verdasco beat 31st-seeded David Nalbandian 6-2, 3-6, 6-3, 6-2 in the third round of the U.S. Open.

Verdasco is through to the round of 16 at a Grand Slam for the third time this year. The Spaniard faced just one break point on his serve in the three sets he won.

Argentina's Nalbandian was playing in his first Grand Slam tournament since the 2009 Australian Open because of a series of injuries.